• Wenfeng Yang, Jvtao Li, Yuewen Su, Wu Liang, Yuanfei Ren, Yvjin Dong, Yaohua Shang, Sheng Zhong, Lianchun Xu, and Tiehui Zhang.
• Dalian Municipal Central Hospital Affiliated of Dalian Medical University, Shahekou district, Dalian, Liaoning, China.
• Clinics (Sao Paulo). 2021 Jan 1; 76: e2358.

ObjectivesIn the present study, a novel single knot tenorrhaphy was developed by combining the modified Kessler flexor tendon suture (MK) with the loop lock technique.MethodsA total of 48 porcine flexor digitorum profundus tendons were collected and randomly divided into six groups. The tendons were transversely cut and then repaired using six different techniques, the MK method, double knot Kessler-loop lock flexor tendon suture (DK), and single knot Kessler-loop lock flexor tendon suture (SK), each in combination with the epitendinous suture (P), and the same three techniques without P. Furthermore, by performing the load-to-failure tests, the biomechanical properties and the time taken to complete a repair, for each tenorrhaphy, were assessed.ResultsCompared to the MK+P method, DK+P was more improved, thereby enhancing the ultimate tensile strength. The SK+P method, which required fewer knots than DK+P, was easier to perform. Moreover, the SK+P repair increased the force at a 2-mm gap formation, while requiring lesser knots than DK+P.ConclusionAs opposed to the traditional MK+P method, the SK+P method was improved and exhibited better biomechanical properties, which may facilitate early mobilization after the repair.

9 keywords...

hide…